Mapping radial abundance gradients with Gaia-ESO open clusters - Evidence of recent gas accretion in the Milky Way disk

Open Access

Table 3

Comparison between OC sample by Magrini et al. (2023) and two-infall model [Fe/H] gradients at different ages.

		Full sample	Restricted sample	Two-infall model
Young Ages	Slope (dex kpc^–1)	–0.0497 ± 0.0096	–0.0627 ± 0.0078	–0.0689 ± 0.0051
(<1 Gyr)	Intercept (dex)	0.3477 ± 0.0723	0.4866 ± 0.0610	0.7190 ± 0.0432

Intermediate Ages	Slope (dex kpc^–1)	–0.0927 ± 0.0087	–0.0862 ± 0.0085	–0.0690 ± 0.0052
(1 < Gyr < 3)	Intercept (dex)	0.7725 ± 0.0776	0.7332 ± 0.0743	0.6714 ± 0.0440

Old Ages	Slope (dex kpc^-1)	–0.0479 ± 0.0276	–0.0968 ± 0.0167	–0.0677 ± 0.0037
(>3 Gyr)	Intercept (dex)	0.3042 ± 0.2300	0.7841 ± 0.1437	0.5376 ± 0.0315

Notes. Results are shown for R < 12 kpc. For “full sample” we refer to the OC sample presented in Sect. 2.1, for the ‘restricted sample’ to the one restricted to OCs members with log g >2.5 and ξ < 1.8 km s^-1 (see Sect. 2.2).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.